EP0991867B1 - Hydraulisches ventil, insbesondere zur steuerung einer nockenwellenverstellung in einem kraftfahrzeug - Google Patents
Hydraulisches ventil, insbesondere zur steuerung einer nockenwellenverstellung in einem kraftfahrzeug Download PDFInfo
- Publication number
- EP0991867B1 EP0991867B1 EP98924241A EP98924241A EP0991867B1 EP 0991867 B1 EP0991867 B1 EP 0991867B1 EP 98924241 A EP98924241 A EP 98924241A EP 98924241 A EP98924241 A EP 98924241A EP 0991867 B1 EP0991867 B1 EP 0991867B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- valve bushing
- bushing
- face
- hydraulic valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 229910000838 Al alloy Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims 1
- 239000000314 lubricant Substances 0.000 abstract 1
- 230000006835 compression Effects 0.000 description 7
- 238000007906 compression Methods 0.000 description 7
- 230000037431 insertion Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/041—Construction of housing; Use of materials therefor of sliding valves cylindrical slide valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K27/00—Construction of housing; Use of materials therefor
- F16K27/04—Construction of housing; Use of materials therefor of sliding valves
- F16K27/048—Electromagnetically actuated valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34426—Oil control valves
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/7504—Removable valve head and seat unit
- Y10T137/7613—Threaded into valve casing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/86622—Motor-operated
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T137/00—Fluid handling
- Y10T137/8593—Systems
- Y10T137/86493—Multi-way valve unit
- Y10T137/86574—Supply and exhaust
- Y10T137/8667—Reciprocating valve
- Y10T137/86694—Piston valve
- Y10T137/86702—With internal flow passage
Definitions
- the invention relates to a hydraulic valve, in particular for Control of a camshaft adjustment in a motor vehicle, according to the preamble of claim 1.
- This hydraulic valve (DE-A-44 23 629) has a valve bushing with its front side in a mounting hole Valve plate inserted.
- the valve bushing has an axial control bore, which receives a control piston. From the front of the valve bushing a washer is pressed into the control bore. At the Outside is the valve bushing in the area of this end face with a provide a recess away from a pressure medium flow, which is designed as an annular groove and receives a sealing ring.
- a hydraulic valve has a valve bushing with an end face ahead in a Location hole of a housing can be used.
- the housing can e.g. the housing of an internal combustion engine.
- a control piston In an axial Control bore of the valve bushing is a control piston, with which the pressure medium paths between an inlet channel, an outlet channel and a consumer channel are controllable.
- One can of these channels go axially from the receiving bore of the housing and with the mouth of the control bore on the front of the Valve bushing is in the same flow path.
- valve bushing with an electromagnet assembled one of which has a spool in the control bore the valve bushing against the force of a helical compression spring is displaceable towards the end of the valve bushing.
- the helical compression spring is supported on an inner shoulder of the valve bushing and a circlip that is close to the electromagnet facing end of the control piston is attached to this.
- a hydraulic valve with a similar structure is from DE 44 22 742 A1 known.
- a control piston in the control bore of a valve member that is not slidable into a housing Valve socket to be used is formed, but immediately one Represents housing with external connections.
- the helical compression spring, against the force of which the control piston can be moved by an electromagnet is supported between the control piston and a disc from that of an end facing away from the electromagnet Housing is pressed into the control bore.
- the helical compression spring against the force of which the control piston can be moved by an electromagnet is supported between the control piston and a disc from that of an end facing away from the electromagnet Housing is pressed into the control bore.
- valve housing, the control piston and the support disc for the Helical compression springs are in the valve according to DE 44 22 742 A1, which is produced in series for the automotive industry, made of aluminum or an aluminum alloy.
- the invention has for its object the generic hydraulic Valve for the production of individual parts and to be more cost-effective in terms of assembly.
- the disc of the hydraulic valve according to the invention is included Press fit into the control bore, so that it itself and the Valve bushing does not have to be threaded and therefore are relatively easy to manufacture.
- the outside from the front provided that the valve bushing is screwed in apart from a pressure medium flow allows, despite a because of the necessary sealing between different pressure medium channels tight fit between the valve bushing and the mounting hole in the housing Push the valve bushing into the mounting hole.
- a slight expansion of the socket in the area of the pressed Washer does not lead to an oversize due to the screwing on the valve bushing. This is due to the fact that the distance of the end the turn from the front of the valve bushing is greater than the distance of the end of the pressing section farther from the end face between valve bushing and disc from the front.
- the ratio of these distances is between 1.5 and 2.0, preferably between 1.7 and 1.8. Such a length of twisting prevented an excess caused by pressing in the disc is effective on the valve bushing. On the other hand, this also results in a sufficient level
- Valves Advantageous configurations of a hydraulic system according to the invention Valves can be found in the subclaims.
- valve sleeve and the disc are made at least largely with regard to their expansion coefficient made of the same materials. This ensures that the Press fit between the washer and the valve bushing in one big Temperature range is maintained.
- the valve bushing and the disc each made of aluminum or an aluminum alloy manufactured.
- the depth of the recess is preferably in the radial direction less than 10% of the valve sleeve wall thickness. In comparison to Depth of an open to the outside and in a pressure medium flow path then the groove on the valve bushing much less deep.
- a metallic housing 10 can be seen in some areas in the drawing, that e.g. Is part of the engine block of a motor vehicle.
- the latter can be done Consider as a tubular component that runs along its entire length has constant outer and inner diameters and its outer surface and the inner surface interrupted by various screwing are.
- Over most of the length of the location hole 12 is the diameter of the outer diameter of the Valve bushing 13 matched that the valve bushing sucking into the Location hole can be inserted.
- Against the mounting surface 11 has the receiving bore 12 a portion with an enlarged Diameter which is provided with an internal thread 14.
- From the floor a pressure medium channel 15 extends axially from the receiving bore 12.
- Three further pressure medium channels 16, 17 and 18 open radially into the Location hole 12.
- the valve bushing 13 is in a blind bore of a pole core 19 Electromagnet 20 used and therein by pressing held by material of the pole core in a recess 21.
- the Polkern 19 is on an axial extension with an external thread 22 provided and thus in the internal thread 14 of the receiving bore 12 screwed in.
- the pressure medium channels 16, 17 and 18 of the housing 10 are after externally open annular grooves 27, 28 and 29 assigned to the valve bushing 13.
- Several radial bores lead from the central annular groove 28 30 in the continuous and serving as a control bore 31 Inner bore of the valve bushing 13.
- the ring grooves 27 and 29 are via radial bores 32 and 33 with axially offset to them and open inwards to the control bore 31 Ring grooves 34 and 35 connected.
- a control piston 36 is axially displaceable in the control bore 31, with which the pressure medium paths between the channels 15, 16, 17 and 18 are controllable.
- the control piston 36 is on one face of a plunger facing the electromagnet 20 37 of the electromagnet can be acted upon and by the electromagnet against the force of a helical compression spring 38 in the direction to the bottom of the receiving bore 12 and closer to the end 39 of the valve bush 13 facing this bottom be moved.
- the helical compression spring is between the Control piston 36 and a plate 40 clamped by the End face 39 ago with a press fit into the control bore 31 of the valve bushing 13 is pressed.
- the pressing distance between the disk 40 and the valve bushing 13 is slightly smaller than the axial one Expansion of the disc 40, since the latter has an insertion bevel 42 having.
- valve bushing 13 and the disk 40 consist of the same Aluminum alloy, therefore have the same coefficient of thermal expansion and therefore remain in a wide temperature range firmly connected.
- the valve bushing 13 When the washer 40 is pressed into the control bore 31 the valve bushing 13 slightly. So that expansion when inserting the valve bushing 13 into the receiving bore 12 does not lead to difficulties, the valve bushing 13 has from its end face 39 an indentation 45, the Radial depth much less than depth of the ring grooves 27, 28 or 29.
- the recess In the case of a valve in which the Outside diameter of the valve bushing 20 mm and the inside diameter Is 12 mm, the recess is e.g. 0.5 mm deep and is So only about 6% of the outer and inner diameter given wall thickness of the valve bushing 13. In the axial direction extends from the end face 39 of the valve bushing 13 away the recess 45 over the pressing distance between the disc 40 and the valve bushing 13 also.
- the end of the turn 45 is about 1.75 times as far from that End face 39 of the valve sleeve 13 removed like that at the transition to the insertion slope 42 of the disc 40 end of the pressing section between the disk 40 and the valve bushing 13.
- a such length of the recess 45 effectively prevents one by Pressing the disk 40 due to the excess of the valve bushing 13.
- the sealing length between the annular groove 29 and the recess 45 on the outside of the valve sleeve 13 still long enough to prevent the leakage of pressure medium between the channels 15 and 18 to keep low.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Fluid Mechanics (AREA)
- Magnetically Actuated Valves (AREA)
- Valve Device For Special Equipments (AREA)
- Servomotors (AREA)
Abstract
Description
Claims (6)
- Hydraulisches Ventil, insbesondere zur Steuerung einer Nokkenwellenverstellung in einem Kraftfahrzeug, mit einer Ventilbuchse (13), die mit einer Stirnseite (39) voraus in eine Aufnahmebohrung (12) eines Gehäuses (10) einsetzbar ist, von der Stirnseite (39) her außen mit einer abseits einer Druckmittelströmung befindlichen Eindrehung (45) versehen ist und eine axiale Steuerbohrung (31) aufweist, in die von der Stirnseite (39) her eine Scheibe (40) eingesetzt ist, die mit Preßsitz in die Steuerbohrung (31) gedrückt ist,
dadurch gekennzeichnet, daß der Abstand des Endes der Eindrehung (45) von der Stirnseite (39) der Ventilbuchse (13) größer ist als der Abstand des weiter von der Stirnseite (39) entfernten Endes der Preßstrecke zwischen Ventilbuchse (13) und Scheibe (40) von der Stirnseite (39), und daß das Verhältnis der Abstände zwischen 1,5 und 2,0, vorzugsweise zwischen 1,7 und 1,8 liegt. - Hydraulisches Ventil nach Anspruch 1,
dadurch gekennzeichnet, daß die Ventilbuchse (13) und die Scheibe (40) auf hinsichtlich ihres Ausdehnungskoeffizienten zumindest weitgehend gleichen Materialien gefertigt sind. - Hydraulisches Ventil nach Anspruch 1 oder 2,
dadurch gekennzeichnet, daß die Ventilbuchse (13) und die Scheibe (40) jeweils aus einem metallischen Werkstoff gefertigt sind. - Hydraulisches Ventil nach Anspruch 3,
dadurch gekennzeichnet, daß die Ventilbuchse (13) und die Scheibe (40) jeweils aus Aluminium oder einer Aluminiumlegierung gefertigt sind. - Hydraulisches Ventil nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Tiefe der Eindrehung (45) in radialer Richtung weniger als 10% der Wanddicke der Ventitbuchse (13) beträgt. - Hydraulisches Ventil nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, daß die Ventilbuchse (13) mit wenigstens einer nach außen offenen und in einem Druckmittelströmungspfad liegenden Ringnut (27, 28, 29) versehen ist, und daß die Tiefe der Eindrehung (45) in radialer Richtung wesentlich geringer ist als die Tiefe der Ringnut (27, 28, 29).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19727180A DE19727180C2 (de) | 1997-06-26 | 1997-06-26 | Hydraulisches Ventil, insbesondere zur Steuerung einer Nockenwellenverstellung in einem Kraftfahrzeug |
DE19727180 | 1997-06-26 | ||
PCT/EP1998/002525 WO1999000602A1 (de) | 1997-06-26 | 1998-04-29 | Hydraulisches ventil, insbesondere zur steuerung einer nockenwellenverstellung in einem kraftfahrzeug |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0991867A1 EP0991867A1 (de) | 2000-04-12 |
EP0991867B1 true EP0991867B1 (de) | 2003-12-10 |
Family
ID=7833738
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98924241A Expired - Lifetime EP0991867B1 (de) | 1997-06-26 | 1998-04-29 | Hydraulisches ventil, insbesondere zur steuerung einer nockenwellenverstellung in einem kraftfahrzeug |
Country Status (5)
Country | Link |
---|---|
US (1) | US6289921B1 (de) |
EP (1) | EP0991867B1 (de) |
JP (1) | JP2002506507A (de) |
DE (2) | DE19727180C2 (de) |
WO (1) | WO1999000602A1 (de) |
Families Citing this family (47)
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DE19853670C5 (de) * | 1998-11-20 | 2019-01-10 | Hilite Germany Gmbh | Einrichtung zur Nockenwellenverstellung |
DE10037793B4 (de) * | 2000-08-03 | 2007-05-24 | Hydraulik-Ring Gmbh | Magnetventil, insbesondere Druckregelventil |
ITBO20010092A1 (it) * | 2001-02-20 | 2002-08-20 | Magneti Marelli Spa | Dispositivo elettroidraulico per l'azionamento delle valvole di un motore a scoppio |
JP2002286151A (ja) * | 2001-03-26 | 2002-10-03 | Denso Corp | 電磁弁 |
DE10150238C2 (de) * | 2001-10-11 | 2003-09-25 | Hydac Fluidtechnik Gmbh | Druckregelventil, insbesondere Proportional-Druckregelventil |
DE10223431B4 (de) | 2002-05-25 | 2004-07-08 | Ina-Schaeffler Kg | Brennkraftmaschine mit zumindest zwei nebeneinander angeordneten, jeweils mit einer Vorrichtung zur Drehwinkelverstellung gegenüber einer Kurbelwelle ausgebildeten Nockenwellen |
DE10229912B4 (de) * | 2002-07-04 | 2012-12-13 | Schaeffler Technologies AG & Co. KG | Elektromagnetisches Hydraulikventil, insbesondere Proportionalventil zur Steuerung einer Vorrichtung zur Drehwinkelverstellung einer Nockenwelle gegenüber einer Kurbelwelle einer Brennkraftmaschine |
DE20210450U1 (de) | 2002-07-05 | 2002-09-12 | NAU Steuerungstechnik GmbH, 27777 Ganderkesee | Ventil |
DE10300974A1 (de) * | 2003-01-14 | 2004-07-22 | Hydraulik-Ring Gmbh | Proportionalmagnetventil einer Nockenwellenverstelleinrichtung für Kraftfahrzeuge |
DE10308074A1 (de) * | 2003-02-26 | 2004-09-09 | Hydraulik-Ring Gmbh | Ventil, vorzugsweise Proportionalmagnetventil |
DE10325177A1 (de) * | 2003-06-04 | 2005-01-05 | Hydac Fluidtechnik Gmbh | Ventil |
DE102004025215A1 (de) * | 2004-05-22 | 2005-12-08 | Ina-Schaeffler Kg | Nockenwellenversteller |
DE102005037480A1 (de) * | 2005-08-09 | 2007-02-15 | Schaeffler Kg | Steuerventil und Verfahren zur Herstellung desselben |
DE102005047641A1 (de) * | 2005-10-05 | 2007-04-12 | Schaeffler Kg | Steuerventil für einen Nockenwellenversteller |
DE102005048732B4 (de) * | 2005-10-12 | 2024-07-25 | Schaeffler Technologies AG & Co. KG | Elektromagnetische Stelleinheit eines hydraulischen Wegeventils |
JP2007146830A (ja) * | 2005-10-31 | 2007-06-14 | Hitachi Ltd | 内燃機関の油圧制御装置 |
US8387644B2 (en) * | 2007-02-09 | 2013-03-05 | Saturn Electronics & Engineering, Inc. | Solenoid operated fluid control valve |
DE102007042046A1 (de) * | 2007-09-05 | 2009-03-12 | Hydraulik-Ring Gmbh | Antriebsmotor mit einem Nockenwellenversteller mit einem elektromagnetischen Hydraulikventil |
DE102008037981B4 (de) | 2007-10-02 | 2023-01-26 | Continental Automotive Technologies GmbH | Schieberventil |
DE102008006377A1 (de) | 2008-01-29 | 2009-07-30 | Schaeffler Kg | Hydraulisches Ventilteil eines Steuerventils |
US8127786B2 (en) * | 2008-04-03 | 2012-03-06 | Hamilton Sundstrand Corporation | Proportional selector valve for selecting between two pressure sources |
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US8602060B2 (en) * | 2008-09-22 | 2013-12-10 | GM Global Technology Operations LLC | Multiplexing control valve |
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DE102009008056A1 (de) | 2009-02-09 | 2010-08-12 | Schaeffler Technologies Gmbh & Co. Kg | Steuerventile zur Steuerung von Druckmittelströmen |
DE102009024026B4 (de) | 2009-06-05 | 2022-12-08 | Schaeffler Technologies AG & Co. KG | Steuerventil zum Steuern von Druckmittelströmen mit integriertem Rückschlagventil |
DE102009051310A1 (de) | 2009-10-29 | 2011-05-05 | Schaeffler Technologies Gmbh & Co. Kg | Befestigungsanordnung eines Nockenwellenverstellers |
DE102009054050A1 (de) | 2009-11-20 | 2011-05-26 | Schaeffler Technologies Gmbh & Co. Kg | Schaltbare Vorrichtung zur Druckversorgung |
DE102009054055A1 (de) | 2009-11-20 | 2011-05-26 | Schaeffler Technologies Gmbh & Co. Kg | Schaltbare Vorrichtung zur Druckversorgung |
DE102009054052B4 (de) | 2009-11-20 | 2018-08-23 | Schaeffler Technologies AG & Co. KG | Schaltbare Vorrichtung zur Druckversorgung |
DE102009054053A1 (de) | 2009-11-20 | 2011-05-26 | Schaeffler Technologies Gmbh & Co. Kg | Druckspeicher und hydraulisches System |
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DE102010039918B4 (de) * | 2010-08-30 | 2025-02-13 | Robert Bosch Gmbh | Druckregelventil in Schieberbauweise mit verbessertem Dämpfungsverhalten |
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JP2570766Y2 (ja) * | 1991-08-23 | 1998-05-13 | 株式会社ユニシアジェックス | 内燃機関のバルブタイミング制御装置 |
DE4131384C2 (de) * | 1991-09-20 | 1994-10-06 | Rexroth Mannesmann Gmbh | Elektrisch betätigbares Ventil |
DE4228045A1 (de) * | 1992-08-24 | 1994-03-03 | Rexroth Mannesmann Gmbh | Magnetventil, insbesondere Proportionalmagnetventil |
DE4235929C2 (de) * | 1992-10-23 | 2000-08-24 | Mannesmann Rexroth Ag | Zylinderverstellung |
GB2277367B (en) * | 1993-04-24 | 1997-01-15 | Automotive Products Plc | A solenoid operated spool valve |
US5367992A (en) * | 1993-07-26 | 1994-11-29 | Borg-Warner Automotive, Inc. | Variable camshaft timing system for improved operation during low hydraulic fluid pressure |
DE4328709C2 (de) * | 1993-08-26 | 1996-04-04 | Bosch Gmbh Robert | Elektromagnetventil |
US5377720A (en) * | 1993-11-18 | 1995-01-03 | Applied Power Inc. | Proportional pressure reducing and relieving valve |
DE9402206U1 (de) * | 1994-02-10 | 1994-05-05 | Hydraulik-Ring Antriebs- und Steuerungstechnik GmbH, 72622 Nürtingen | Elektroproportionalmagnet-Ventileinheit |
DE9402205U1 (de) * | 1994-02-10 | 1994-04-28 | Hydraulik-Ring Antriebs- und Steuerungstechnik GmbH, 72622 Nürtingen | Proportionalmagnet-Ventileinheit |
DE4417293C2 (de) * | 1994-05-07 | 2001-05-31 | Mannesmann Rexroth Ag | Proportional-Druckregelventil |
DE4422742C2 (de) * | 1994-06-29 | 1997-02-06 | Rexroth Mannesmann Gmbh | Hydraulisches Wegeventil, das insbesondere von einem Proportionalmagneten betätigbar ist |
DE4423629A1 (de) * | 1994-07-06 | 1996-01-11 | Rexroth Mannesmann Gmbh | Hydraulisches Ventil, das insbesondere zur Verwendung in einem Kraftfahrzeug vorgesehen ist |
JPH08219319A (ja) * | 1995-02-16 | 1996-08-30 | Kayaba Ind Co Ltd | 電磁比例圧力制御弁 |
US5577534A (en) * | 1995-06-02 | 1996-11-26 | Applied Power Inc. | Load sensing proportional pressure control valve |
JP3666072B2 (ja) * | 1995-09-13 | 2005-06-29 | アイシン精機株式会社 | 切替弁 |
DE19535945A1 (de) * | 1995-09-27 | 1997-04-03 | Hydraulik Ring Gmbh | Magnetventil sowie Verfahren zu dessen Herstellung |
JPH09166238A (ja) * | 1995-12-14 | 1997-06-24 | Denso Corp | 電磁弁 |
US5853028A (en) * | 1997-04-30 | 1998-12-29 | Eaton Corporation | Variable force solenoid operated valve assembly with dampener |
-
1997
- 1997-06-26 DE DE19727180A patent/DE19727180C2/de not_active Expired - Fee Related
-
1998
- 1998-04-29 JP JP50523199A patent/JP2002506507A/ja not_active Ceased
- 1998-04-29 DE DE59810411T patent/DE59810411D1/de not_active Expired - Lifetime
- 1998-04-29 WO PCT/EP1998/002525 patent/WO1999000602A1/de active IP Right Grant
- 1998-04-29 US US09/446,840 patent/US6289921B1/en not_active Expired - Lifetime
- 1998-04-29 EP EP98924241A patent/EP0991867B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59810411D1 (de) | 2004-01-22 |
WO1999000602A1 (de) | 1999-01-07 |
DE19727180A1 (de) | 1999-01-07 |
US6289921B1 (en) | 2001-09-18 |
DE19727180C2 (de) | 2003-12-04 |
JP2002506507A (ja) | 2002-02-26 |
EP0991867A1 (de) | 2000-04-12 |
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